Draft-arm for railway-cars.



G. A. JOHNSON.

DRAFT ARM FOR RAILWAY CARS.

AFPLlcATIoN min ocT. 9. 1914.

, V Patented J lune 5, 1917.

m a f Q C) s Cf.) 21' Qu@ @n h E w w Affi?" STATES PATENT OFFICE;

@Ionen A. JOHNSON, or' enriched, ILLINoIs, lAssIefNoarownxmaia H. MINEB, or

cna'zr, NEW Yonx.

DRAFT-ARM FOR RAILWAY-CARS.

Specification of Letters Patent.

Patented June 5,4 1917.

' ppucamnma october s, 1914. seria; No. 865,789.

` To allA whom'z't may'co'ncewi:

Be it known that I, GEORGE A. JoHNsoN,

. a citizen of the United' States, residing at Chica'gm in' the county of Cook and State of Illinois, have invented a certain new-,and useful Improvement in DraftfArms for lailwayCars, of which the. following ,isa full," clear, concise, and exact description, reference being had to the accompanying drawings, forming a par-t of this. specifica tion.

" draft arms for railway cars.

The object of my invention is toprovide a draft'arm of 4strong construction, sultable for attachmex'it tothe underfra'me of a rail- In the drawings forming apart of thisv specification, Figure 1 is avertical longi- -tudinalsection taken on line 1-1 of Fig. 2 of ya draft arm embodying my invention. Fig. 2 is a' plan ,viewpartly in horizontal section onlinev 2-2 of Fig. 1. Fig. 3 is consists ofni' inverted U-sha'ped member 9,

"preferably a casting having the side plates `10-10 thereof suitably spaced apart to re.-

' a limb 13 of' the'horizontally arranged draft ceive adra-ft rigging between them, the said lates bein y the pre erably Aintegral transverse member 11. 'The side plates 11`-11 are each provided i withl a suitable longitudinally `eX- tendin'g groove 12,` earzh adapted to receive yoke 14. At its forward endthe draft arm .8' is provided' `with ya preferably upturned iangel` @15,- whi'c'h 'is y suitably secured to the end sill 5 preferably by the rivets 16. Each side member 10 of thedraft arm 8 atits rearward portionradjoins an inner face 17 of one dfthecenter'si11s'4, said members .being suitably secured to the center sills,v

preferably by the rivets ,1S- 18.

The principal embodimentof my invention illustrated by the drawings is one adapted to receive a draftfgear of the tandem type, the draft arm being provided with upper and lower front stop members Y My invention relates to improvements in connected at their upper ends 19 and 20 respectively, upper and lower in. termedi-ateA stops 21 and 22 respectively, forming the front intermediate stop shoul ders 23%23 and' the rear intermediate stop shoulders 24A- 24. The same is also provided with upper and lower rear stop shoulders 25e-25. The` upper stop shoulders are pret erably 4formed'. by suitable convolutions in the .upper member 9 ofthedraft arm S, the metal formingsaid member being in preferable construction of substantially uniform thickness throughout.' Forward of the lower front stop shoulder 2Q the draft arm 8 is provided with a preferably integral lower transverse connecting member 26 forming with theside members 10 and' the upper member 9 alo'ngitudinally opening ocket to receive .the draw bar 27. In pre .erable constructiomthe. lower front stop shoulder 20V is formed by `an integral downturned flange at the rear`end ofthe member 2G. The front draft gearvpo'cket 28. of the draft. armv is adapted to receive suitable compres sion resistingmembe'rs, preferably the outer spring 29 and the inner spring 30 nested therein. The rear draft geary pocket 31 -within the draft member 8, is similarly adapted to receive suitable compression resisting. members, preferably the outer spring 32' and `the inner spring 33 nested therein. The lower openings34'--34 of the draft gear `pockets 28 andjlfthrough which the draft gear-"is radapted to be received'from below lnto the draft arm, are each provided with suitable` closing means adapted to support the draft gear therein comprising preferably'the plate: 35 received through transverse slots 36-36 in the lower portion of the side members 10 of 'thedraft' arm 8, the said lplates lbeing" provided at one end with a ange` orfhead 37, and at the otherend with a cotter'39 or othersuitable means to prevent' the 1 accidental -1 displacements thereof.

Near their` free endsgthe limbs 13-13=of the draft yoke '1,4 are each provided with a transverse slot, l0-for the passage of a coupler key lil'which is receivedwithin'the draw barl and passes at itsv ends through suitable longiv tudinally extended transverse slots 113-43 in o5' theisidemembers'10'-'1O of the draft arm 8. The limbs, of the draft yoke 14. are provided near their forward ends and rearwardl of the key slots "therein with' inwardly lproJect- 'ing shoulders 45--45,.which in normal positlon of the parts-of the draft rigging regster substantially with the front stop memliiers 19 and 20. Intermediate its ends the yoke 1.4 is provided with a transverse cminecting thimble 46, theV front face ai' of which invnormal position of the parts of the draft rigging substantially regist-ers with tbe front intermediate stopV shoulders 23-23 of the intermediate stops 21 and the rear face 48 of which substanltially registers with the'rear intermediate .stop shoulders 24-24 of the. intermediate stop members 21. The rear connecting member 49'0f the draft yoke is received within the forwardly opening pocket 50, rearwardly of the rear draft gear pocket 31, the said pocket 50 being preferably formed by convolutions in the member 9 of the draft arm 8, which in preferable construction terminates at the lower edge of the draft arm 8 at the point indicated by the .numeral 51 in Fig. 1 of the drawings, the same formi-ng in preferable construction the rear stop shoulders 25, "In normal position of the parts of the draft rigging the front face 52 o'f thc 25 rear connecting member 49 of the draft yoke substantially registers `with the faces 25 of the. rear stop mcmbers. On forward move-f nient of the dra-w bar the coupler key 41 slides forwardly in the slots i3-+43 in the 3D draft arm, the forward movement of the yoke compressing the springs in the front draft gear poe| et28 between the front stop sl'ionlders and the forwardly movin-g lnl'erl `mediate connecting thimble 46 of the-draft fvolce.

49 her 49 of the draft yoke. 0n rearward move.-

inent of the draw bar the springs' ,inthe front spring pocket 28 are compressed against the front intermediate stopy shouldersQS by the rearwardly movingdraw bar andthe inturned shoulders 4L5ofthe draft yoke While the's )rings in the rear s rin a 4 i: y.- p

pocket 31 are compressed against the rear stop shoulders 25 by the rearwardly moving intermediate connecting thimble 4:6 of the draft yoke. The rear connecting member 49 of the draft yoke in rearward movement of thel draw bar moves rearwardly in the pocket 50, extreme rearward movement being limited by the engagement of the rear member 49 of the draft yoke against the plate 55 forming the rear wall of the pocket 50.

l. A draft arm for railway car draft rig gings comprising a hollow, box-like casting arranged to receive a horizontal yoke and having side and top. walls, said casting being provided with a rear wall having a horizontal convolution therein adapted to receive the rear end of a yoke and accommodate itsinward movement under buff, the'side .walls of said casting being extended rearwardly beyond said convolution.

2. In a draft rigging, a hollow, boX-like casting having stop shoulders, said casting being formed at its enter and with integral upper and lamb-r horizontal walls and vertical side Valls, 'to thereby form a pocket' adapted to receive the inner end of a drawbar, said upper and lower horizontal walls being in line with the front stops.

3. As an article of manufacture, adraft arm for railway draft rigging's, said draft arm comprising a box-like' casting of substantially uniform Ithickness throughout,`

said casting being prytiiiided vwith longitudinally arranged con" litions on the sides thereof adapted to a` :prnmodate a hc'niizon- 'tal yoke, 'said casting'libeing provided also with integral transve'gs'. upper and lower convolutions approximately at the Center thereof, said transverse convolutions form- .ing intermediate stops,

AJOHNSON.

Witnesses: g

" CARRIE G. YRAN-21:, l LUGILLE HIGGINS. 

